tree d5acb3d829b04de4aa978b294071d6f9e0ec06b1
parent 92107dfd3b99ab0dbb0f4770286454ad94a36de2
author Daniel Willmann <dwillmann@sysmocom.de> 1402387344 +0200
committer Holger Hans Peter Freyther <holger@moiji-mobile.com> 1403448059 +0200

write_queue: Avoid possible use-after-free if fd is read-/writable

If the FD is both readable and writable and the read callback closes the
connection (and frees the surrounding structure) we shouldn't call the
write callback (or check anything else in the read fd).

With this patch callback functions can return -EBADFD if they don't want
the FD to be handled any more.